Laboratory freezer



FIG. 1 is a front and top perspective view of a laboratory freezer of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a cross-sectional view taken along the line 8-8 of FIG. 2; and,

FIG. 9 is a cross-sectional view taken along the line 9-9 of FIG. 2.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

CLAIM We claim the ornamental design for a laboratory freezer, as shown and described. 